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United States Patent | 6,248,813 |
Zehner | June 19, 2001 |
A cellulosic composite comprising: (a) at least one cellulosic material present in an amount in the range of from about 50% to about 75% by weight of the composite, (b) at least one polyvinyl chloride material present in an amount in the range of from about 25% to about 50% by weight of the composite, and (c) at least one polar thermosetting material present in an amount in the range of from about 0% to about 4% by weight of the composite is disclosed. An extruded article made form the cellulose composite and a method of making the cellulose composite are also disclosed.
Inventors: | Zehner; Burch E. (Gahanna, OH) |
Assignee: | Crane Plastics Company Limited Partnership (Columbus, OH) |
Appl. No.: | 595690 |
Filed: | June 16, 2000 |
Current U.S. Class: | 524/13; 524/15 |
Intern'l Class: | B27N 003/04 |
Field of Search: | 524/13,15,16 |
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Ingredient Range (by weight) Preferred Range (by weight) Wood sawdust 50-75% 60-70% PVC material 25-50% 30-40% Thermosetting 0-4% 0-1% material
Range (per 100 Preferred Range (per Ingredient parts of resin) 100 parts of resin) PVC resin 100 parts 100 parts (I.V. range of 0.6-1.0) Stabilizer 2-8 phr 5-7 phr Lubricants 4-10 phr 6-8 phr Process Aids 2-6 phr 3-5 phr